River Phoenix's Final Film to Be Completed With Brother Joaquin

The actor was in the midst of shooting Dark Blood when he died of heart attack at age 23 outside L.A.'s Viper Room in 1993; autopsy results found lethal traces of cocaine and morphine, in addition to diazepam, ephedrine and marijuana in River's bloodstream.

In Dark Blood, River plays a young widower who lives in the desert on a nuclear testing site, waiting for the end of the world. When a couple (played by JonathanPryce and JudyDavis) seek shelter in the area, Boy begins a troubled relationship with Davis' character.